_WIN32 Define leads to wrong include paths

[CoffeeCrew]

I'm not sure if it's a problem related to the plugin or to VisualStudio Code but maybe someone can help. I have a IAR project which works perfectly fine with the plugin except that somehow _WIN32 is always defined. This leads to wrong include pathes because some files include others depending on the used platform. I have searched where _WIN32 could be defined but didn't found anything.
Currently I have fixed this issue temporarily by adding a

#undef _WIN32

line but doing this in a larger project for every file is kind of annoying. Maybe someone can explain this behaviour and how to fix it.

Thanks in advance.

[httpftpli]

I'm in the same trouble. Maybe The cause of the problem is that the extension rewrite the file c_cpp_properties.json,and set IntelliSense mode MSVC-X64.